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110 NP2624M User Guide
YML827 Rev1
5. Application Examples
5.1. VLAN application used with switch
VLAN is a simple solution to protect your network against broadcast storming by creating segments
based on Layer2 Ethernet information and avoiding the complexity and the heavy processing
requirements of Layer3 IP based routers.
As a result, each group of stations connect to separate Segmented Ports to form different isolated
Broadcast Domains. The Broadcast Sharing Ports should be used to connect servers and other
common services, such as Internet access, that are used by all the stations connected to the different
Segmented Ports.
Virtual LAN, or VLAN, is generally defined as broadcast domain. It can be viewed as a group of
end nodes, possibly on different physical network segments, which can communicate with each
other.
Benefits of VLANs
• Groups users into logical networks for performance enhancement.
• Provides effective broadcast containment between Segmented Ports, which prevents
flooding of a network.
• Offers security by completely isolating the different Broadcast Domains connected on
separate Segmented Ports.
• Preserves current investment in equipment and cabling.
• Provides an easy, flexible, economic way to modify logical groups when needed.
• Network administrators can easily “fine tune” the network.
• Keeps the network structure separate to the physical topology of the cabling.
• Makes large networks more manageable.